Collatz in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 676th dokutan 872 62 5ms 28 Apr 2025 677th DialFrost 🇸🇬 872 86 49ms 24 Oct 2024 677th stefangimmillaro 872 86 49ms 14 Jan 2025 679th c0d3-4-F00d 🇩🇪 872 89 311ms 5 May 2022 679th fkantelberg 872 89 319ms 15 Jul 2023 679th bac0id 872 89 320ms 26 Sep 2023 679th TRexOnGit 872 89 320ms 16 Feb 2024 683rd inventshah 872 97 54ms 6 May 2022 683rd roupiq 🇵🇱 872 97 58ms 22 Nov 2023 685th nwellnhof 🇩🇪 872 111 260ms 4 May 2022 685th stefangimmillaro 872 111 259ms 26 Sep 2023 685th kkoenig 872 111 256ms 4 Jan 2024 688th janbehrens 🇩🇪 871 90 442ms 21 Apr 2023 688th Yewzir 🇧🇪 871 90 463ms 22 Apr 2023 688th DialFrost 🇸🇬 871 90 440ms 6 Nov 2023 688th Ripick 871 90 439ms 27 Nov 2024 692nd AlephSquirrel 870 80 11ms 20 Apr 2023 692nd ashtraypettingzoo 🇺🇸 870 80 14ms 1 Apr 2024 694th GolfingSuccess 🇬🇷 869 71 2ms 5 May 2022 694th emplv 🇱🇻 869 71 3ms 5 May 2022 694th JayXon 🇺🇸 869 71 2ms 7 May 2022 694th m-tkach 🇺🇦 869 71 2ms 15 May 2022 694th nwellnhof 🇩🇪 869 71 2ms 5 Jun 2022 694th Irratix 🇳🇱 869 71 3ms 13 Jun 2022 694th michael-pruglo 🇺🇦 869 71 3ms 13 Jul 2022 694th stefangimmillaro 869 71 2ms 2 Jun 2023 694th kkoenig 869 71 3ms 21 Dec 2023 694th JohandeRuiter 🇳🇱 869 71 3ms 14 Sep 2024 694th masinag 🇮🇹 869 71 2ms 6 Oct 2024 705th dokutan 868 82 24ms 1 Jul 2024 706th nwellnhof 🇩🇪 867 53 7ms 4 May 2022 706th GrayJoKing 🇦🇺 867 53 7ms 6 May 2022 708th dieggsy 867 97 41ms 8 Oct 2024 709th GolfingSuccess 🇬🇷 866 57 787ms 29 Aug 2025 710th Shanethegamer 🇺🇸 866 70 93ms 12 Dec 2022 710th Alessandro-Balconi 🇮🇹 866 70 88ms 26 Dec 2022 710th snoozingnewt 🇺🇸 866 70 177ms 38 hours ago 713th Andriamanitra 🇫🇮 865 54 42ms 21 Jul 2022 713th jared-hughes 865 54 39ms 12 Sep 2022 713th OhmNomNom 865 54 47ms 7 Oct 2022 713th olleicua 🇺🇸 865 54 41ms 21 Jan 2024 713th LostSyntax21 🇬🇧 865 54 41ms 12 Mar 2025 713th AbrahamJLR 🇻🇪 865 54 40ms 4 Jun 2025 713th vishal-mohanty 865 54 42ms 25 Aug 2025 720th MeWhenI 🇻🇦 865 85 44ms 27 Jun 2022 720th Shanethegamer 🇺🇸 865 85 42ms 15 May 2023 720th albanian-laundromat 865 85 45ms 25 Aug 2025 723rd 123mjb 865 96 346ms 3 days ago 723rd noescareno 865 96 344ms 2 days ago 725th ovs-code 🇩🇪 865 133 42ms 8 Jul 2024 726th DialFrost 🇸🇬 864 64 5ms 10 Jul 2024 727th mtirado1 863 75 8ms 13 Aug 2022 728th TylerBloom 863 96 127ms 22 Mar 2024 729th shellbertt 🇨🇦 863 98 55ms 9 May 2022 729th iakolzin 863 98 52ms 26 May 2022 729th Betuaredead 863 98 53ms 5 Jan 2023 729th oceko 863 98 55ms 19 Feb 2024 729th dokutan 863 98 55ms 17 Mar 2024 729th cuzdav 863 98 53ms 4 May 2025 729th timhaj 🇸🇮 863 98 56ms 12 Sep 2025 729th Yax42 🇫🇷 863 98 53ms 4 Oct 2025 737th Steffan153 🇫🇮 862 82 1,270ms 23 Feb 2023 738th deadp4nda 🇩🇪 862 90 315ms 26 Apr 2024 738th 123mjb 862 90 321ms 23 Jun 2025 738th michelebastione 🇮🇹 862 90 365ms 24 Aug 2025 738th razvandmtr 🇷🇴 862 90 493ms 17 days ago 742nd steffan-polygolf 861 73 79ms 23 Feb 2023 742nd MWI-polygolf 861 73 73ms 6 Dec 2023 742nd HumanoidCPU 861 73 80ms 7 May 2024 745th Steffan153 🇫🇮 861 78 82ms 4 Feb 2023 746th GrayJoKing 🇦🇺 860 56 416ms 15 Jan 2024 746th AlephSquirrel 860 56 704ms 21 Jan 2024 748th Setvizan 860 62 10ms 12 Jan 2023 748th GreenBeansAgainstVeganism 860 62 12ms 13 Jan 2023 748th arctouch-cristiannevianna 860 62 10ms 3 Apr 2023 First Prev 676–750 of 3,460 Next Last